More cancer nanotherapy:

Researchers have found a way to target cancer cells by injecting tiny particles that will attack only the diseased cells while leaving healthy cells unscathed, according to a study released on Monday.

...In the mice, the tumors shrank dramatically and all of the mice survived the study while the untreated control animals did not.

"A single injection of our nanoparticles completely eradicated the tumors in five of the seven treated animals, and the remaining animals also had a significant tumor reduction, compared to the controls," said Dr. Omid Farokhzad, assistant professor at Brigham and Women's Hospital and Harvard Medical School.